1.Each product from Kynix has been given a warranty period of 1 YEAR .During this period ,
we could provide free technical maintenance if there are any problems about our products.

2.If you find quality problems about our products after receiving them , you could test them and apply for unconditional refund if it can be proved.But it's
just on this premise that the product is not used and the packing is not damaged .

The CY25811/12/14 products are Spread Spectrum Clock Generator (SSCG) ICs used for the purpose of reducing electromagnetic interference (EMI) found in today's high-speed digital electronic systems. The devices use a Cypress proprietary phase-locked loop (PLL) and Spread Spectrum Clock (SSC) technology to synthesize and modulate the frequency of the input clock. By frequency modulating the clock, the measured EMI at the fundamental and harmonic frequencies is greatly reduced. This reduction in radiated energy can significantly reduce the cost of complying with regulatory agency requirements and improve time to market without degrading system performance. The input frequency range to 32 MHz and accepts clock, crystal and ceramic resonator inputs. The output clock can be selected to produce or 4x multiplication of the input frequency with Spread Spectrum Frequency Modulation. The use or 4x frequency multiplication eliminates the need for higher order crystals and enables the user to generate to 128-MHz Spread Spectrum Clock (SSC) by using only first order crystals. This will reduce the cost while improving the system clock accuracy, performance and complexity. Center Spread or Down Spread frequency modulation can be selected by the user based on four discrete values of Table 2. Spread% Selection XIN (MHz) FRSEL = 0 CENTER = M CENTER = 1 CENTER

The CY25811/12/14 input frequency range to 32 MHz. This range is divided into three segments and controlled by 3-Level FRSEL pin as given in Table 1. Table 1. Input Frequency Selection FRSEL 1 M Input Frequency Range to 8.0 MHz to 16.0 MHz to 32.0 MHz

The CY25811/12/14 SSCG products provide Center-Spread, Down-Spread and No-Spread functions. The amount of Spread% is selected by using 3-Level S0 and S1 digital inputs and Spread% values are given in Table 2.

Spread Spectrum Clock Generators utilize frequency modulation (FM) to distribute energy over a specific band of frequencies. The maximum frequency of the clock (fmax) and minimum frequency of the clock (fmin) determine this band of frequencies. The time required to transition from fmin to fmax and back to fmin is the period of the Modulation Rate. The Modulation Rate of SSCG clocks are generally referred to in terms of frequency, or fmod = 1/Tmod. The input clock frequency, fin, and the internal divider determine the Modulation Rate. In the case of CY25811/2/4 devices, the (Spread Spectrum) modulation Rate, fmod, is given by the following formula: fmod = fin/DR

The relationship between input frequency versus output frequency in terms of device selection and FRSEL setting is given in Table 4. As shown, the input frequency range is selected by FRSEL and is the same for CY25811, CY25812, and CY25814. The selection CY25814 (4x) determines the frequency multiplication at the output (SSCLK, Pin 5) with respect to input frequency (XIN, Pin-1).